Engine Keyword
/ANIM/SHELL/DAMA - Damage Value in a Shell Element Layer
Description
Generates animation files containing a damage value for each layer of a shell element. The damage value is the maximum of damage over time and of all failure criteria associated to the material.
Format
/ANIM/SHELL/DAMA/Keyword4
Data
|
Description
|
Keyword4
|
Output location:
N - Layer number N
|
UPPER - Upper layer
|
LOWER - Lower layer (number of integration point is equal to one)
|
ALL - All the layers
|
Comments
| 1. | In case of BATOZ shell element, the value is the average value of the Gauss points in the layer. |
This applies only to failure criteria defined with /FAIL keywords, failure defined inside material laws (/MAT/GURSON) is currently not available.
| 2. | The damage value, D is the maximum value of all failure criteria of the model. |
The damage value, which is displayed, is the maximum damage value over time.
In case of composite shell element property TYPE51, the damage value for one layer is computed as the maximum value over the all integration points of its layer.
| 3. | The damage value, D is 0 < D < 1. The status for fracture is: |
Free, if 0 < D < 1
Failure, if D = 1
| 4. | D is computed for every failure criteria as follows: |
Where, 
is the strain limit from FLD function
| • | Chang failure (/FAIL/CHANG) - the maximum damage for different failure mode:
 |
| • | Hashin Composite failure (/FAIL/HASHIN) - the maximum damage for different failure mode:
 |
| • | Puck Composite failure (/FAIL/PUCK) - the maximum damage for different failure mode:
 |
| • | Strain Failure Model with dependence on Lode angle (/FAIL/TAB1)
 |
